/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.eventmesh.function.transformer;

import java.util.List;

import com.fasterxml.jackson.core.JsonProcessingException;

class TemplateTransformer implements Transformer {

    private final JsonPathParser jsonPathParser;

    private final Template template;

    TemplateTransformer(JsonPathParser jsonPathParser, Template template) {
        this.template = template;
        this.jsonPathParser = jsonPathParser;
    }

    @Override
    public String transform(String json) throws JsonProcessingException {
        // 1: get variable match results
        List<Variable> variableList = jsonPathParser.match(json);
        // 2: use results replace template
        return template.substitute(variableList);
    }

}
